TDA7416

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1.6 Equalizer filter

There are three parameters programmable in the equalizer filter:

1.6.1 Attenuation

Figure 7 shows the boost and cut response as a function of frequency at a center frequency of 1kHz.

1.6.2 Center Frequency

This parameter is programmable in the filter stage 1(62/100Hz), 6(4/6.34kHz) and 7(15/16kHz) only.

Figure 8 shows the center frequencies 62, 156, 396, 1000, 2510, 6340 and 15000Hz of the 7 equalizer

filters.

Figure 8. Center frequencies @ Gain = 15dB, Q = 1.0

20

10k

100

1k

Hz

-15

15

-10

10

-5

5

0

dB

20k

10

20k

100

1k

Hz

-2

0

16

2

14

4

12

6

10

8

dB